Talisman of longing 50k daily coins? 10 years of playing! Are you joking?

I made a quick calculation and realised that each player even he accomplish every day alla missions he gets 5k daily coins per year which means to get the talisman of longing he needs 10 years, knowing that it costs 50k daily coins
Any reasonable explanation why you want some one to play 10 years to earn an item that he can get in a year or less?

Talisman of longing 50k daily coins? 10 years of playing! Are you joking?